1,721,024 research outputs found
Competenze digitali nella società dell\u27informazione. Intervento di Marta Simeoni e Teresa Scantamburlo
No full textSettimo intervento del convegno "Un mercato unico digitale per l’Europa", tenuto da Marta Simeoni e Teresa Scantamburlo che analizzano quali competenze digitali sono richieste attualmente e presentano le risposte formative, e fattive, che giungono dall\u27Ateneo (ad es: Master in Digital Humanities) e, in particolare, dalla Biblioteca di Area Scientifica (es: Learning Center)
Modelli 3D per la fruizione online del patrimonio museale
No full textThe paper presents the 3D digitization activities of the San Domenico ceramics collection
preserved at the PoMAq Museum of the University of L’Aquila, carried out within the framework of the Depositi project of the interuniversity research center CeDiPa, with the aim of communicating and enhancing them online. Starting from structured light scans and subsequently photogrammetry,
the goal is to test a procedure for defining suitable characteristics of the digital models of the heritage under study.Il contributo presenta le attività di digitalizzazione 3D della collezione di ceramiche di
San Domenico conservate presso il museo PoMAq dell’Università degli Studi dell’Aquila,
condotta nell’ambito del progetto Depositi del Centro di Ricerca interateneo CeDiPa, al fine della loro comunicazione e valorizzazione online. Prendendo avvio da scansioni a luce strutturata e quindi fotogrammetria, l’obiettivo è sperimentare una procedura per la definizione di adeguate caratteristiche dei modelli digitali del patrimonio in oggetto
STRATEGIE DI DIGITALIZZAZIONE 3D PER LA DOCUMENTAZIONE DI REPERTI ARCHEOLOGICI: IL CASO DELLE CERAMICHE DI SAN DOMENICO
No full textThis paper presents an experimental study carried out as part of the research activities of the CeDiPa
(Center for Cultural Heritage Digitization), aimed at developing advanced digital methodologies for the documentation and enhancement of cultural heritage preserved in emergency contexts, such as post-earthquake storage facilities. The selected case study focuses on the digitization of the ceramic collection of San Domenico, currently housed at PoMAq, the University Museum of L’Aquila. The work involved the use of handheld structured-light 3D scanners, used to acquire archaeological artefacts of small and medium size. The study enabled a comparative evaluation of the two scanning devices in terms of technical performance and the quality of the resulting 3D models. The proposed workflow proved to be both effective and replicable, although certain operational challenges emerged when handling complex or fragmented geometries. The results confirm the significance of 3D digitization as
an active tool for heritage documentation, access, and knowledge dissemination, while also ighlighting the need
for flexible, integrated approaches tailored to specific contexts and artefact characteristics
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
PHARMACOKINETICS OF RECOMBINANT INTERFERON (IFN)-ALPHA IN A HEPATITIS PATIENT WITH NEUTRALIZING ANTIBODY TO IFN.
No full textAppropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Anti-HIV antiviral activity of stavudine in a thymidine kinase-deficient cellular line.
No full textStavudine (d4T) is a potent inhibitor of human immunodeficiency virus type 1 (HIV-1) reverse transcriptase. It is known that stavudine is metabolized in cells to the mono-, di- and triphosphate nucleotides but the enzymes responsible for its phosphorylation are as yet unidentified. in particular, there are conflicting results concerning the role of thymidine kinase 1 (TK1) in stavudine metabolism. To gain new insights into this phenomenon we analysed the antiviral activity of stavudine in a TK1-deficient, resistant cell line.
The results indicate that TK1 is responsible for the phosphorylation of stavudine but it is not the only enzyme involved in its activation. The other enzyme(s) that might be involved in the metabolism of stavudine, however, are not able to phosphorylate stavudine with the same efficiency as TK1. Since it has been shown that prolonged treatment with zidovudine may induce an in vivo defect in TK1 activity. it is tempting to speculate that patients treated for a long time with zidovudine could be resistant to further treatment with stavudine
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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